Apparatus for inserting filling yarns in circular looms



June 22, 1 JUAN PUIGCORBE MARIN APPARATUS FOR INSERTING FILLING YARNS INCIRCULAR LOOMS 2 SheetsSheet 1 Filed Jan. 22, 1952 INVENTQR. JUANPu|acor25 MARIN June 1954 JUAN PUIGCORBE MARIN 2,681,664

APPARATUS FOR INSERTING FILLING YARNS IN CIRCULAR LOOMS Filed Jan. 22,1952 2 Sheets-Sheet 2 I' II I| I. F 22 20 IN V EN TOR 5 Jab JUANulecoRss MAR/N BY nrroramsxs FIG. 3

Patented June 22, 1954 UNI-TED STATE ENTL] OFFICE,

APPARATUS FOR INSERTING FILLING YARNS IN OIRCFJLAR LOOMS Juan PuigcorbMarin, Barcelona; Spain,

ApplicationJanuary 22, 1952, SerialNo. 267,597

3 Claims.

This invention relates to circular, weaving looms and has particularrelation to a new and improved mechanism for inserting filling yarns incircular looms.

It is an object of the invention to provide a circular loomhaving'mechanism ,for inserting filling yarns, which is characterizedby-a plurality of shuttles, operating simultaneously and successively,so that the productive capacity of the loom is increasedconsiderably.

Another object of theinvention is the provision of a circular .loom ofthe character described which aiiords efficiency and dependability ofoperation to a degree heretofore unobtainable in looms of this type.

The mechanism consists of a circular operating device which transmits arotary-motion to a plu,-,

rality of satellite pinions locatedperipherally and distributeduniformly around said device, which pinions transmit the movementreceived from said driving device to arcuate shuttleswhich,

carry one or more bobbins and are guided, in a circular path around theoperating device when the pinionsare rotated passing through the shedsformed at the proper time in each of the multiple sectionsinto which thewarp of the loom is annularly divided.

The circular ,operating device which transmits the general motionto.therotary-pinions may be a gear or crown gear;-a chain, a perforatedbelt or the like.

Other objects and advantages .of the invention will be apparentinthecourseof the following;

specification. whentaken, in .connection with the accompanying drawingswhichrillustrate a preferred embodiment by'way of illustration only andnot in a limiting sense.

Fig. 1 is a plan view partially in section, of a portion of a loomshowing one of the shuttles and the mechanism for driving the shuttle.

Fig. 2 is a vertical section taken substantially along line 22 of Fig.1.

Fig. 3 is a perspective view of the shuttle and mechanism of Figs. 1 and2, as seen from the outside of the loom, with portions broken away toreveal internal construction.

The mechanism includes an annular rack I having a continuous row ofteeth 2 around its inner periphery. These teeth 2 mesh with the teeth ofone or more pinions, such as the pinion 3 which is mounted on a shaft 4.The shaft 4 is rotated by suitable driving mechanism (not shown) of themachine whereby the pinion 3 rotates the rack I. In rotating, the rack Irests upon a fixed circular support 5 which has a plurality of spaced,upstanding, circular guide rails l which interfit with correspondingdepending circular guide-rails 8 oftherack I, for guiding said rack Ifor rotation in a circular path. The support 5 is immovable, beingsecured by keying 6 to a fixed central column II I which is rigid withthe machine frame.

The rack i is provided with a continuous row of teeth I 2 around itsouter periphery which meshes with the teeth of a plurality of satellitepinions I3 for uniform rotation of said pinions i3 when the rack isrotated. The pinions-13 are spaced from each other, and each 'issupported by a depending pivot I 4 which is mounted in a verticalbearing l5;

The pinions l3 engage withthe teeth IB of flat arcuate shuttles is whichare spaced radially from theouter periphery of the rack I, as shown inFig. 3. The shuttles 15 have opposedpointed ends I! which perform theshuttle operation. Each shuttle H5 has an arcuate guide rail if! on itstop and bottom surface, which guide rails are alined and positioned tofit'within corresponding arcuate grooves formed in respective spacedsupport blocks 22 and 23. The'support blocks 22 are integral with anangular annular member 20 and extend radially therefrom, while theblocks 23 are integral with a similar angular annular member 2|, andextendradially from said annular member 20. The annular members 20 and21 are rigidly fixed to respective supports 5 and 9 as by means ofscrews 24 and 25. Thesupport 9 is in turn rigidly and immovably mountedon the central column H as by keying J0. Each lower block 22 supportsthe bearing [5 of one of the pinions l3. Each pinion I3 .is thus .ro--tatably mounted between a pair of verticallyalined blocks 22 and 23.

Each shuttle l6 carries one or more bobbins; such as the bobbin 26,which depends therefrom and is so inclined that its longitudinal axiscoincides with the axis of the shed formed in the warp yarns a and b.When a shuttle is pro vided with more than one bobbin, the end of theyarn of one bobbin must be connected to the beginning of the yarn woundon the next bobbin. As the yarn 21 is unwound from bobbin 26, it isconducted through a yarn guide 28 to its point of insertion 29 fromwhich it is inserted between the angle of the shed formed between theyarns a and b.

In order to allow the insertion of the filling yarns, the shed must beopened by a suitable set of heddles which are not shown, but whosemanner of operation and location at or near the top of the machine willbe familiar to those 'skilled in the art. Upon the formation of the shedsome of the warp yarns b must be suitably held by their heddles in avertical position between the outer peripheral edges of the fixedannular members 28 and 2! and the inner toothed edge of the shuttles It,as shown in the drawings. The remaining warp yarns a are held by theircorresponding heddles inclined outwardly beyond the outer arcuate edgesof the shuttles H5. The warp yarns bin the vicinity of each of therevolving shuttles I6, are located within the spaces between the pairsof alined blocks 22 and '23, as clearly shown in Figs. 1 and 3, so thatthey are divided into annular sections spaced by said pairs of blocks 22and 23, in order to permit the traversal of the shuttles 16 in mesh withthe pinions l3.

After a particular shuttle [6 has passed a pinion l3 and left itsfilling 21, the shed behind this pinion I3 is momentarily left free andunobstructed until the arrival of the next shuttlev During this time,the warp yarns are recrossed by their heddles to form a new shed, sothat all or part of the yarns a take the position formerly occupied byyarns b and all or part of the yarns I) take the position formerlyoccupied by yarns a. An unobstructed path through the newly-formed shedis thus provided by the heddles for the next approaching shuttle is.

As can be noted from the drawings, the pinions 13 are spaced apart asufficiently close distance to enable each shuttle [6 to be in constantmesh with at least two of the pinions l 3, so that each shuttle is alsoalways guided by at least two pairs of alined support blocks 22 and 23.

Since a considerable number of shuttles it may be provided to operatesimultaneously in a single machine, it is possible to increase theproductive capacity of a loom to a substantial extent.

While a preferred embodiment of the invention has been shown anddescribed herein, it is obvious that numerous changes, omissions, andadditions may be made without departing from the spirit and scopethereof. For example, instead of the guide rails 19, any suitableequivalent guide means may be used to guide the shuttle in a circularpath. Again the transmission of motion from the pinions 13 to theshuttles 16 can be eifected by the engagement of the teeth of saidpinions with teeth arranged on any suitable portion of said shuttles.

What is claimed is:

1. In a circular loom which has a frame and movable heddles for formingsheds in warp yarns carried by said frame, a mechanism for insertingfiller yarns in said sheds, said mechanism comprising a circular rackextending entirely around said frame and having teeth on the outer rimthereof, and mounted for rotary movement relative to said frame, drivemeans located centrally in said frame for rotating said rack, said framehaving radial extensions extending outwardly of said rack and dividedinto vertically aligned and spaced pairs, said pairs of frame extensionsbeing circumferentially spaced around said frame, a pinion mountedbetween each said pair of frame extensions and meshing with the teeth ofsaid rack, said frame extensions having track means therein outwardly ofsaid pinions, a shuttle mounted in said track means for movement aboutthe circumference of said rack between the pairs of frame extensions,said shuttle having inner teeth which mesh with the teeth of saidpinions, and a bobbin for filler yarns carried by said shuttle, wherebysaid shuttle is adapted to be driven around the circumference of saidrack to lay a filler yarn within said sheds.

2. A mechanism in accordance with claim 1 in which the warp yarnscomprising said shed are divided into an inner group and an outer group,said inner group being located between said circular rack and the pathof said shuttle and being divided annularly by said frame extensions,said outer group being located outwardly of the path of said shuttle andalso outwardly of said frame extensions, said bobbin dependingsubstantially vertically from said shuttle, said shuttle also carryingthread guiding means having an outlet opening adjacent the bottom ofsaid shed, whereby a filler thread carried by said bobbin is adapted tobe drawn through said outlet opening and laid substantially at thebottom of said shed upon movement of said shuttle.

3. A mechanism in accordance with claim 2, in which said thread guidingmeans has an outlet portion in which said outlet opening is located,said outlet portion being thin and flat, whereby it is adapted to fitslidably in the bottom of said shed.

References Cited in the file of this patent UNITED STATES PATENTS Numbera Name Date 203,183 Morris Apr. 30, 1878 908,161 Smith Dec. 29, 19081,683,385 Frederickson Sept. 4, 1928 1,822,292 Jabouley Sept. 8, 19312,035,208 Villa et al Mar. 24, 1936 2,042,703 Dreyfus et al June 2, 19362,483,118 Ancet Sept.- 27, 1949 FOREIGN PATENTS Number Country Date256,817 Switzerland Mar. 16, 1949

